1d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 2d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * All rights reserved. 3d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 4d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * This package is an SSL implementation written 5d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * by Eric Young (eay@cryptsoft.com). 6d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The implementation was written so as to conform with Netscapes SSL. 7d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 8d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * This library is free for commercial and non-commercial use as long as 9d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * the following conditions are aheared to. The following conditions 10d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * apply to all code found in this distribution, be it the RC4, RSA, 11d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * included with this distribution is covered by the same copyright terms 13d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * except that the holder is Tim Hudson (tjh@cryptsoft.com). 14d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 15d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * Copyright remains Eric Young's, and as such any Copyright notices in 16d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * the code are not to be removed. 17d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * If this package is used in a product, Eric Young should be given attribution 18d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * as the author of the parts of the library used. 19d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * This can be in the form of a textual message at program startup or 20d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * in documentation (online or textual) provided with the package. 21d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 22d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * Redistribution and use in source and binary forms, with or without 23d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * modification, are permitted provided that the following conditions 24d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * are met: 25d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 1. Redistributions of source code must retain the copyright 26d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * notice, this list of conditions and the following disclaimer. 27d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 2. Redistributions in binary form must reproduce the above copyright 28d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * notice, this list of conditions and the following disclaimer in the 29d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * documentation and/or other materials provided with the distribution. 30d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 3. All advertising materials mentioning features or use of this software 31d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * must display the following acknowledgement: 32d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * "This product includes cryptographic software written by 33d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * Eric Young (eay@cryptsoft.com)" 34d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The word 'cryptographic' can be left out if the rouines from the library 35d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * being used are not cryptographic related :-). 36d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 4. If you include any Windows specific code (or a derivative thereof) from 37d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * the apps directory (application code) you must include an acknowledgement: 38d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 39d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 40d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * SUCH DAMAGE. 51d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 52d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The licence and distribution terms for any publically available version or 53d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * derivative of this code cannot be changed. i.e. this code cannot simply be 54d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * copied and put under another distribution licence 55d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * [including the GNU Public Licence.] */ 56d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 57d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#ifndef OPENSSL_HEADER_RSA_H 58d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define OPENSSL_HEADER_RSA_H 59d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 60d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#include <openssl/base.h> 61d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 62d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#include <openssl/engine.h> 63d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#include <openssl/ex_data.h> 64e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#include <openssl/thread.h> 65d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 66d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#if defined(__cplusplus) 67d9e397b599b13d642138480a28c14db7a136bf0Adam Langleyextern "C" { 68d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#endif 69d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 70d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 71d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* rsa.h contains functions for handling encryption and signature using RSA. */ 72d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 73d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 74d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Allocation and destruction. */ 75d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 76d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_new returns a new, empty RSA object or NULL on error. */ 77d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT RSA *RSA_new(void); 78d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 79d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_new_method acts the same as |RSA_new| but takes an explicit |ENGINE|. */ 80d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT RSA *RSA_new_method(const ENGINE *engine); 81d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 82d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_free decrements the reference count of |rsa| and frees it if the 83d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * reference count drops to zero. */ 84d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT void RSA_free(RSA *rsa); 85d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 86d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_up_ref increments the reference count of |rsa|. */ 87d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_up_ref(RSA *rsa); 88d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 89d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 90d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Key generation. */ 91d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 92d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_generate_key_ex generates a new RSA key where the modulus has size 93d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |bits| and the public exponent is |e|. If unsure, |RSA_F4| is a good value 94d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * for |e|. If |cb| is not NULL then it is called during the key generation 95d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * process. In addition to the calls documented for |BN_generate_prime_ex|, it 96d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * is called with event=2 when the n'th prime is rejected as unsuitable and 97d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * with event=3 when a suitable value for |p| is found. 98d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 99d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns one on success or zero on error. */ 100d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, 101d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BN_GENCB *cb); 102d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 103d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 104d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Encryption / Decryption */ 105d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 106d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Padding types for encryption. */ 107d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_PKCS1_PADDING 1 108d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_NO_PADDING 3 109d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_PKCS1_OAEP_PADDING 4 110d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_PKCS1_PSS_PADDING can only be used via the EVP interface. */ 111d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_PKCS1_PSS_PADDING 6 112d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 113d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_encrypt encrypts |in_len| bytes from |in| to the public key from |rsa| 114d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * and writes, at most, |max_out| bytes of encrypted data to |out|. The 115d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |max_out| argument must be, at least, |RSA_size| in order to ensure success. 116d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 117d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns 1 on success or zero on error. 118d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 119d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The |padding| argument must be one of the |RSA_*_PADDING| values. If in 120d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_OAEP_PADDING| 121d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * is the most secure. */ 122d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_encrypt(RSA *rsa, size_t *out_len, uint8_t *out, 123d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t max_out, const uint8_t *in, size_t in_len, 124d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int padding); 125d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 126d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_decrypt decrypts |in_len| bytes from |in| with the private key from 127d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |rsa| and writes, at most, |max_out| bytes of plaintext to |out|. The 128d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |max_out| argument must be, at least, |RSA_size| in order to ensure success. 129d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 130d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns 1 on success or zero on error. 131d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 132d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The |padding| argument must be one of the |RSA_*_PADDING| values. If in 133d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_OAEP_PADDING| 134d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * is the most secure. */ 135d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, 136d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t max_out, const uint8_t *in, size_t in_len, 137d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int padding); 138d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 139d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_public_encrypt encrypts |flen| bytes from |from| to the public key in 140d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |rsa| and writes the encrypted data to |to|. The |to| buffer must have at 141d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * least |RSA_size| bytes of space. It returns the number of bytes written, or 142d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * -1 on error. The |padding| argument must be one of the |RSA_*_PADDING| 143d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * values. If in doubt, |RSA_PKCS1_PADDING| is the most common but 144d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |RSA_PKCS1_OAEP_PADDING| is the most secure. 145d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 146d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * WARNING: this function is dangerous because it breaks the usual return value 147d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * convention. Use |RSA_encrypt| instead. */ 148d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_public_encrypt(int flen, const uint8_t *from, 149d9e397b599b13d642138480a28c14db7a136bf0Adam Langley uint8_t *to, RSA *rsa, int padding); 150d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 151d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_private_decrypt decrypts |flen| bytes from |from| with the public key in 152d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |rsa| and writes the plaintext to |to|. The |to| buffer must have at 153d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * least |RSA_size| bytes of space. It returns the number of bytes written, or 154d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * -1 on error. The |padding| argument must be one of the |RSA_*_PADDING| 155d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * values. If in doubt, |RSA_PKCS1_PADDING| is the most common but 156d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |RSA_PKCS1_OAEP_PADDING| is the most secure. 157d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 158d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * WARNING: this function is dangerous because it breaks the usual return value 159d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * convention. Use |RSA_decrypt| instead. */ 160d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_private_decrypt(int flen, const uint8_t *from, 161d9e397b599b13d642138480a28c14db7a136bf0Adam Langley uint8_t *to, RSA *rsa, int padding); 162d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 163d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_message_index_PKCS1_type_2 performs the first step of a PKCS #1 padding 164d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * check for decryption. If the |from_len| bytes pointed to at |from| are a 165d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * valid PKCS #1 message, it returns one and sets |*out_index| to the start of 166d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * the unpadded message. The unpadded message is a suffix of the input and has 167d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * length |from_len - *out_index|. Otherwise, it returns zero and sets 168d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |*out_index| to zero. This function runs in time independent of the input 169d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * data and is intended to be used directly to avoid Bleichenbacher's attack. 170d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 171d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * WARNING: This function behaves differently from the usual OpenSSL convention 172d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * in that it does NOT put an error on the queue in the error case. */ 173d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_message_index_PKCS1_type_2(const uint8_t *from, 174d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t from_len, 175d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t *out_index); 176d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 177d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 178d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Signing / Verification */ 179d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 180d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_sign signs |in_len| bytes of digest from |in| with |rsa| and writes, at 181d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * most, |RSA_size(rsa)| bytes to |out|. On successful return, the actual 182d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * number of bytes written is written to |*out_len|. 183d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 184d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The |hash_nid| argument identifies the hash function used to calculate |in| 185d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * and is embedded in the resulting signature. For example, it might be 186d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |NID_sha256|. 187d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 188d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns 1 on success and zero on error. */ 189d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_sign(int hash_nid, const uint8_t *in, 190d9e397b599b13d642138480a28c14db7a136bf0Adam Langley unsigned int in_len, uint8_t *out, 191d9e397b599b13d642138480a28c14db7a136bf0Adam Langley unsigned int *out_len, RSA *rsa); 192d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 193d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_sign_raw signs |in_len| bytes from |in| with the public key from |rsa| 194e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * and writes, at most, |max_out| bytes of signature data to |out|. The 195d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |max_out| argument must be, at least, |RSA_size| in order to ensure success. 196d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 197d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns 1 on success or zero on error. 198d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 199d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The |padding| argument must be one of the |RSA_*_PADDING| values. If in 200d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * doubt, |RSA_PKCS1_PADDING| is the most common. */ 201d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out, 202d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t max_out, const uint8_t *in, 203d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t in_len, int padding); 204d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 205d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_verify verifies that |sig_len| bytes from |sig| are a valid, PKCS#1 206d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * signature of |msg_len| bytes at |msg| by |rsa|. 207d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 208d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The |hash_nid| argument identifies the hash function used to calculate |in| 209d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * and is embedded in the resulting signature in order to prevent hash 210d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * confusion attacks. For example, it might be |NID_sha256|. 211d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 212d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns one if the signature is valid and zero otherwise. 213d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 214d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * WARNING: this differs from the original, OpenSSL function which additionally 215d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * returned -1 on error. */ 216d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_verify(int hash_nid, const uint8_t *msg, size_t msg_len, 217d9e397b599b13d642138480a28c14db7a136bf0Adam Langley const uint8_t *sig, size_t sig_len, RSA *rsa); 218d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 219d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_verify_raw verifies |in_len| bytes of signature from |in| using the 220d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * public key from |rsa| and writes, at most, |max_out| bytes of plaintext to 221d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |out|. The |max_out| argument must be, at least, |RSA_size| in order to 222d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * ensure success. 223d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 224d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns 1 on success or zero on error. 225d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 226d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * The |padding| argument must be one of the |RSA_*_PADDING| values. If in 227d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * doubt, |RSA_PKCS1_PADDING| is the most common. */ 228d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out, 229d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t max_out, const uint8_t *in, 230d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t in_len, int padding); 231d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 232d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_private_encrypt encrypts |flen| bytes from |from| with the private key in 233d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |rsa| and writes the encrypted data to |to|. The |to| buffer must have at 234d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * least |RSA_size| bytes of space. It returns the number of bytes written, or 235d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * -1 on error. The |padding| argument must be one of the |RSA_*_PADDING| 236d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * values. If in doubt, |RSA_PKCS1_PADDING| is the most common. 237d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 238d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * WARNING: this function is dangerous because it breaks the usual return value 239d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * convention. Use |RSA_sign_raw| instead. */ 240d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_private_encrypt(int flen, const uint8_t *from, 241d9e397b599b13d642138480a28c14db7a136bf0Adam Langley uint8_t *to, RSA *rsa, int padding); 242d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 243d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_private_encrypt verifies |flen| bytes of signature from |from| using the 244d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * public key in |rsa| and writes the plaintext to |to|. The |to| buffer must 245d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * have at least |RSA_size| bytes of space. It returns the number of bytes 246d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * written, or -1 on error. The |padding| argument must be one of the 247d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |RSA_*_PADDING| values. If in doubt, |RSA_PKCS1_PADDING| is the most common. 248d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 249d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * WARNING: this function is dangerous because it breaks the usual return value 250d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * convention. Use |RSA_verify_raw| instead. */ 251d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_public_decrypt(int flen, const uint8_t *from, 252d9e397b599b13d642138480a28c14db7a136bf0Adam Langley uint8_t *to, RSA *rsa, int padding); 253d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 254d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 255d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Utility functions. */ 256d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 257d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_size returns the number of bytes in the modulus, which is also the size 258e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * of a signature or encrypted value using |rsa|. */ 259d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT unsigned RSA_size(const RSA *rsa); 260d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 261d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_is_opaque returns one if |rsa| is opaque and doesn't expose its key 262d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * material. Otherwise it returns zero. */ 263d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_is_opaque(const RSA *rsa); 264d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 265d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_supports_digest returns one if |rsa| supports signing digests 266d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * of type |md|. Otherwise it returns zero. */ 267d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_supports_digest(const RSA *rsa, const EVP_MD *md); 268d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 269d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSAPublicKey_dup allocates a fresh |RSA| and copies the private key from 270d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |rsa| into it. It returns the fresh |RSA| object, or NULL on error. */ 271d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT RSA *RSAPublicKey_dup(const RSA *rsa); 272d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 273d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSAPrivateKey_dup allocates a fresh |RSA| and copies the private key from 274d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |rsa| into it. It returns the fresh |RSA| object, or NULL on error. */ 275d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT RSA *RSAPrivateKey_dup(const RSA *rsa); 276d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 277d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_check_key performs basic validatity tests on |rsa|. It returns one if 278d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * they pass and zero otherwise. Opaque keys and public keys always pass. If it 279d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * returns zero then a more detailed error is available on the error queue. */ 280d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_check_key(const RSA *rsa); 281d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 282d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_recover_crt_params uses |rsa->n|, |rsa->d| and |rsa->e| in order to 283d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * calculate the two primes used and thus the precomputed, CRT values. These 284d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * values are set in the |p|, |q|, |dmp1|, |dmq1| and |iqmp| members of |rsa|, 285d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * which must be |NULL| on entry. It returns one on success and zero 286d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * otherwise. */ 287d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_recover_crt_params(RSA *rsa); 288d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 289f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley/* RSA_verify_PKCS1_PSS_mgf1 verifies that |EM| is a correct PSS padding of 290e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * |mHash|, where |mHash| is a digest produced by |Hash|. |EM| must point to 291e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * exactly |RSA_size(rsa)| bytes of data. The |mgf1Hash| argument specifies the 292e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * hash function for generating the mask. If NULL, |Hash| is used. The |sLen| 293e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * argument specifies the expected salt length in bytes. If |sLen| is -1 then 294e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * the salt length is the same as the hash length. If -2, then the salt length 295e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * is maximal and is taken from the size of |EM|. 296f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley * 297f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley * It returns one on success or zero on error. */ 298f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam LangleyOPENSSL_EXPORT int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const uint8_t *mHash, 299f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley const EVP_MD *Hash, 300f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley const EVP_MD *mgf1Hash, 301f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley const uint8_t *EM, int sLen); 302f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley 303f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley/* RSA_padding_add_PKCS1_PSS_mgf1 writes a PSS padding of |mHash| to |EM|, 304e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * where |mHash| is a digest produced by |Hash|. |RSA_size(rsa)| bytes of 305e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * output will be written to |EM|. The |mgf1Hash| argument specifies the hash 306e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * function for generating the mask. If NULL, |Hash| is used. The |sLen| 307e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * argument specifies the expected salt length in bytes. If |sLen| is -1 then 308e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * the salt length is the same as the hash length. If -2, then the salt length 309e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * is maximal given the space in |EM|. 310f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley * 311f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley * It returns one on success or zero on error. */ 312f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam LangleyOPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, uint8_t *EM, 313f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley const uint8_t *mHash, 314f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley const EVP_MD *Hash, 315f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley const EVP_MD *mgf1Hash, 316f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley int sLen); 317f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley 318f4dabdd0527bd5cc09ab043ec6b0a53be190d93aAdam Langley 319d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* ASN.1 functions. */ 320d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 321d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* d2i_RSAPublicKey parses an ASN.1, DER-encoded, RSA public key from |len| 322d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result 323d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * is in |*out|. If |*out| is already non-NULL on entry then the result is 324d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * written directly into |*out|, otherwise a fresh |RSA| is allocated. On 325d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * successful exit, |*inp| is advanced past the DER structure. It returns the 326d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * result or NULL on error. */ 327d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT RSA *d2i_RSAPublicKey(RSA **out, const uint8_t **inp, long len); 328d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 329d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* i2d_RSAPublicKey marshals |in| to an ASN.1, DER structure. If |outp| is not 330d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * NULL then the result is written to |*outp| and |*outp| is advanced just past 331d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * the output. It returns the number of bytes in the result, whether written or 332d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * not, or a negative value on error. */ 333d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int i2d_RSAPublicKey(const RSA *in, uint8_t **outp); 334d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 335d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* d2i_RSAPrivateKey parses an ASN.1, DER-encoded, RSA private key from |len| 336d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result 337d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * is in |*out|. If |*out| is already non-NULL on entry then the result is 338d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * written directly into |*out|, otherwise a fresh |RSA| is allocated. On 339d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * successful exit, |*inp| is advanced past the DER structure. It returns the 340d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * result or NULL on error. */ 341d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT RSA *d2i_RSAPrivateKey(RSA **out, const uint8_t **inp, long len); 342d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 343d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* i2d_RSAPrivateKey marshals |in| to an ASN.1, DER structure. If |outp| is not 344d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * NULL then the result is written to |*outp| and |*outp| is advanced just past 345d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * the output. It returns the number of bytes in the result, whether written or 346d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * not, or a negative value on error. */ 347d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int i2d_RSAPrivateKey(const RSA *in, uint8_t **outp); 348d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 349d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 350d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* ex_data functions. 351d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 352e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * See |ex_data.h| for details. */ 353d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 354d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_get_ex_new_index(long argl, void *argp, 355d9e397b599b13d642138480a28c14db7a136bf0Adam Langley CRYPTO_EX_new *new_func, 356d9e397b599b13d642138480a28c14db7a136bf0Adam Langley CRYPTO_EX_dup *dup_func, 357d9e397b599b13d642138480a28c14db7a136bf0Adam Langley CRYPTO_EX_free *free_func); 358d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT int RSA_set_ex_data(RSA *r, int idx, void *arg); 359d9e397b599b13d642138480a28c14db7a136bf0Adam LangleyOPENSSL_EXPORT void *RSA_get_ex_data(const RSA *r, int idx); 360d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 361d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_FLAG_OPAQUE specifies that this RSA_METHOD does not expose its key 362d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * material. This may be set if, for instance, it is wrapping some other crypto 363d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * API, like a platform key store. */ 364d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_FLAG_OPAQUE 1 365d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 366d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_FLAG_CACHE_PUBLIC causes a precomputed Montgomery context to be created, 367d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * on demand, for the public key operations. */ 368d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_FLAG_CACHE_PUBLIC 2 369d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 370d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_FLAG_CACHE_PRIVATE causes a precomputed Montgomery context to be 371d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * created, on demand, for the private key operations. */ 372d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_FLAG_CACHE_PRIVATE 4 373d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 374d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_FLAG_NO_BLINDING disables blinding of private operations. */ 375d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_FLAG_NO_BLINDING 8 376d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 377d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_FLAG_EXT_PKEY means that private key operations will be handled by 378d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |mod_exp| and that they do not depend on the private key components being 379d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * present: for example a key stored in external hardware. */ 380d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_FLAG_EXT_PKEY 0x20 381d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 382d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA_FLAG_SIGN_VER causes the |sign| and |verify| functions of |rsa_meth_st| 383d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * to be called when set. */ 384d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_FLAG_SIGN_VER 0x40 385d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 386d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 387d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* RSA public exponent values. */ 388d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 389d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_3 0x3 390d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_F4 0x10001 391d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 392d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 393f7e890d94bfb2ecad87621eed301e1897b5a6aefAdam Langley/* Deprecated functions. */ 394f7e890d94bfb2ecad87621eed301e1897b5a6aefAdam Langley 395f7e890d94bfb2ecad87621eed301e1897b5a6aefAdam Langley/* RSA_blinding_on returns one. */ 396f7e890d94bfb2ecad87621eed301e1897b5a6aefAdam LangleyOPENSSL_EXPORT int RSA_blinding_on(RSA *rsa, BN_CTX *ctx); 397f7e890d94bfb2ecad87621eed301e1897b5a6aefAdam Langley 398f7e890d94bfb2ecad87621eed301e1897b5a6aefAdam Langley 399d9e397b599b13d642138480a28c14db7a136bf0Adam Langleystruct rsa_meth_st { 400d9e397b599b13d642138480a28c14db7a136bf0Adam Langley struct openssl_method_common_st common; 401d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 402d9e397b599b13d642138480a28c14db7a136bf0Adam Langley void *app_data; 403d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 404d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*init)(RSA *rsa); 405d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*finish)(RSA *rsa); 406d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 407d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* size returns the size of the RSA modulus in bytes. */ 408d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t (*size)(const RSA *rsa); 409d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 410d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*sign)(int type, const uint8_t *m, unsigned int m_length, 411d9e397b599b13d642138480a28c14db7a136bf0Adam Langley uint8_t *sigret, unsigned int *siglen, const RSA *rsa); 412d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 413d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*verify)(int dtype, const uint8_t *m, unsigned int m_length, 414d9e397b599b13d642138480a28c14db7a136bf0Adam Langley const uint8_t *sigbuf, unsigned int siglen, const RSA *rsa); 415d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 416d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 417d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* These functions mirror the |RSA_*| functions of the same name. */ 418d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*encrypt)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out, 419d9e397b599b13d642138480a28c14db7a136bf0Adam Langley const uint8_t *in, size_t in_len, int padding); 420d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*sign_raw)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out, 421d9e397b599b13d642138480a28c14db7a136bf0Adam Langley const uint8_t *in, size_t in_len, int padding); 422d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 423d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*decrypt)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out, 424d9e397b599b13d642138480a28c14db7a136bf0Adam Langley const uint8_t *in, size_t in_len, int padding); 425d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*verify_raw)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out, 426d9e397b599b13d642138480a28c14db7a136bf0Adam Langley const uint8_t *in, size_t in_len, int padding); 427d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 428d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* private_transform takes a big-endian integer from |in|, calculates the 429d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * d'th power of it, modulo the RSA modulus and writes the result as a 430d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * big-endian integer to |out|. Both |in| and |out| are |len| bytes long and 431d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |len| is always equal to |RSA_size(rsa)|. If the result of the transform 432d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * can be represented in fewer than |len| bytes, then |out| must be zero 433d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * padded on the left. 434d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 435d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * It returns one on success and zero otherwise. 436d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * 437d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * RSA decrypt and sign operations will call this, thus an ENGINE might wish 438d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * to override it in order to avoid having to implement the padding 439d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * functionality demanded by those, higher level, operations. */ 440d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*private_transform)(RSA *rsa, uint8_t *out, const uint8_t *in, 441d9e397b599b13d642138480a28c14db7a136bf0Adam Langley size_t len); 442d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 443d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*mod_exp)(BIGNUM *r0, const BIGNUM *I, RSA *rsa, 444d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BN_CTX *ctx); /* Can be null */ 445d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*bn_mod_exp)(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 446d9e397b599b13d642138480a28c14db7a136bf0Adam Langley const BIGNUM *m, BN_CTX *ctx, 447d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BN_MONT_CTX *m_ctx); 448d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 449d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int flags; 450d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 451d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*keygen)(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb); 452d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 453d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* supports_digest returns one if |rsa| supports digests of type 454d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * |md|. If null, it is assumed that all digests are supported. */ 455d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int (*supports_digest)(const RSA *rsa, const EVP_MD *md); 456d9e397b599b13d642138480a28c14db7a136bf0Adam Langley}; 457d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 458d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 459d9e397b599b13d642138480a28c14db7a136bf0Adam Langley/* Private functions. */ 460d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 461d9e397b599b13d642138480a28c14db7a136bf0Adam Langleytypedef struct bn_blinding_st BN_BLINDING; 462d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 463d9e397b599b13d642138480a28c14db7a136bf0Adam Langleystruct rsa_st { 464d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* version is only used during ASN.1 (de)serialisation. */ 465d9e397b599b13d642138480a28c14db7a136bf0Adam Langley long version; 466d9e397b599b13d642138480a28c14db7a136bf0Adam Langley RSA_METHOD *meth; 467d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 468d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *n; 469d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *e; 470d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *d; 471d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *p; 472d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *q; 473d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *dmp1; 474d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *dmq1; 475d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BIGNUM *iqmp; 476d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* be careful using this if the RSA structure is shared */ 477d9e397b599b13d642138480a28c14db7a136bf0Adam Langley CRYPTO_EX_DATA ex_data; 47853b272a2813a0b11f107d77100ff8805ada8fbd2Adam Langley CRYPTO_refcount_t references; 479d9e397b599b13d642138480a28c14db7a136bf0Adam Langley int flags; 480d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 481e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley CRYPTO_MUTEX lock; 482e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley 483e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley /* Used to cache montgomery values. The creation of these values is protected 484e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * by |lock|. */ 485d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BN_MONT_CTX *_method_mod_n; 486d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BN_MONT_CTX *_method_mod_p; 487d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BN_MONT_CTX *_method_mod_q; 488d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 489d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* num_blindings contains the size of the |blindings| and |blindings_inuse| 490d9e397b599b13d642138480a28c14db7a136bf0Adam Langley * arrays. This member and the |blindings_inuse| array are protected by 491e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * |lock|. */ 492d9e397b599b13d642138480a28c14db7a136bf0Adam Langley unsigned num_blindings; 493d9e397b599b13d642138480a28c14db7a136bf0Adam Langley /* blindings is an array of BN_BLINDING structures that can be reserved by a 494e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * thread by locking |lock| and changing the corresponding element in 495e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley * |blindings_inuse| from 0 to 1. */ 496d9e397b599b13d642138480a28c14db7a136bf0Adam Langley BN_BLINDING **blindings; 497d9e397b599b13d642138480a28c14db7a136bf0Adam Langley unsigned char *blindings_inuse; 498d9e397b599b13d642138480a28c14db7a136bf0Adam Langley}; 499d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 500d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 501d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#if defined(__cplusplus) 502d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} /* extern C */ 503d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#endif 504d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 505e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_BN_BLINDING_convert_ex 100 506e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_BN_BLINDING_create_param 101 507e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_BN_BLINDING_invert_ex 102 508e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_BN_BLINDING_new 103 509e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_BN_BLINDING_update 104 510e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_check_key 105 511e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_new_method 106 512e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_add_PKCS1_OAEP_mgf1 107 513e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_add_PKCS1_PSS_mgf1 108 514e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_add_PKCS1_type_1 109 515e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_add_PKCS1_type_2 110 516e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_add_none 111 517e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_check_PKCS1_OAEP_mgf1 112 518e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_check_PKCS1_type_1 113 519e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_check_PKCS1_type_2 114 520e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_padding_check_none 115 521e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_recover_crt_params 116 522e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_sign 117 523e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_verify 118 524e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_RSA_verify_PKCS1_PSS_mgf1 119 525e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_decrypt 120 526e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_encrypt 121 527e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_keygen 122 528e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_pkcs1_prefixed_msg 123 529e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_private_transform 124 530e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_rsa_setup_blinding 125 531e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_sign_raw 126 532e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_F_verify_raw 127 533e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_BAD_E_VALUE 100 534e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_BAD_FIXED_HEADER_DECRYPT 101 535e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_BAD_PAD_BYTE_COUNT 102 536e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_BAD_RSA_PARAMETERS 103 537e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_BAD_SIGNATURE 104 538e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_BLOCK_TYPE_IS_NOT_01 105 539e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_BN_NOT_INITIALIZED 106 540e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_CRT_PARAMS_ALREADY_GIVEN 107 541e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_CRT_VALUES_INCORRECT 108 542e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN 109 543e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_DATA_TOO_LARGE 110 544e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 111 545e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_DATA_TOO_LARGE_FOR_MODULUS 112 546e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_DATA_TOO_SMALL 113 547e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE 114 548e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY 115 549e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_D_E_NOT_CONGRUENT_TO_1 116 550e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_EMPTY_PUBLIC_KEY 117 551e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_FIRST_OCTET_INVALID 118 552e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_INCONSISTENT_SET_OF_CRT_VALUES 119 553e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_INTERNAL_ERROR 120 554e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_INVALID_MESSAGE_LENGTH 121 555e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_KEY_SIZE_TOO_SMALL 122 556e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_LAST_OCTET_INVALID 123 557e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_MODULUS_TOO_LARGE 124 558e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_NO_PUBLIC_EXPONENT 125 559e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_NULL_BEFORE_BLOCK_MISSING 126 560e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_N_NOT_EQUAL_P_Q 127 561e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_OAEP_DECODING_ERROR 128 562e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_ONLY_ONE_OF_P_Q_GIVEN 129 563e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_OUTPUT_BUFFER_TOO_SMALL 130 564e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_PADDING_CHECK_FAILED 131 565e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_PKCS_DECODING_ERROR 132 566e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_SLEN_CHECK_FAILED 133 567e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_SLEN_RECOVERY_FAILED 134 568e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_TOO_LONG 135 569e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_TOO_MANY_ITERATIONS 136 570e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_UNKNOWN_ALGORITHM_TYPE 137 571e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_UNKNOWN_PADDING_TYPE 138 572d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#define RSA_R_VALUE_MISSING 139 573e9ada863a7b3e81f5d2b1e3bdd2305da902a87f5Adam Langley#define RSA_R_WRONG_SIGNATURE_LENGTH 140 574d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 575d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#endif /* OPENSSL_HEADER_RSA_H */ 576